@misc{74970,
  author = {L. Isaksen and Mike Fisher and Erik Andersson},
  title = {The structure and realism of sensitivity perturbations and their interpretation as 'Key Analysis Errors'.},
  year = {2004},
  journal = {ECMWF Technical Memoranda},
  number = {445},
  pages = {23},
  month = {08/2004},
  publisher = {ECMWF},
  address = {Shinfield Park, Reading},
  url = {https://www.ecmwf.int/node/10126},
  doi = {10.21957/rpuh89jd},
  language = {eng},
}